Alright, let's work through 97988700 times 80230873 step by step
97988700 × 80230873 = 80230873 × (97988700)
+ 80230873 × 0 producing 0
+ 80230873 × 00 producing 0
+ 80230873 × 700 resulting in 56161611100
+ 80230873 × 8000 producing 641846984000
+ 80230873 × 80000 producing 6418469840000
+ 80230873 × 900000 what gives us 72207785700000
+ 80230873 × 7000000 that results in 561616111000000
+ 80230873 × 90000000 that equals 7220778570000000

= 7861718945135100
